Ash-sifter



2 Sheets-Sheet 1.

- (No Model.)

. F. A. PEARSONS.

ASH SIFTER No. 529,947. Patented Nov. '27, 1894.

2 Sheets-Sheet 2. F. A. PEARSONS.

(No Model.)

' ASH SIFTER.

Patented Nov. 27, 1894.

w: Nonms PETERS cu PHOTO-LITHO,VIASN1NGTON, o. c.

. UNITED STATES PATENT OFFICE.

FILLMORE A. PEARSONS, OF RUTLAND, VERMONT.

IASH-SIFTIVZR.

' SPECIFICATION forming part of Letters Patent'Nd; 529347, datedNovember 27,1894.

- Application filedIehr-uary 9, 139 SerialNo. 500,763. (No model.)

To all whom it-may conccrn: Be it known that LFILLMORE A. PEAR- soNs, acitizen of theUnited States, residing at Rutland, in the county ofRutland' and State of Vermont, have invented a new and usefulAsh-Sifter, of which the following is a specification.

This invention relates to .that class of ash sifters which embody aninclined rotary screen operating in a shell or casing.

The object of my invention is to provide a simple and improved sifter ofthis character, which will possess advantages in point ofinexpensiveness, convenience, rapidity of operation, durability,effectiveness, and general efficiency, and which will efiectuallyobviate the inconvenience and disadvantages occasioned by the dustusually arising in the operation of ash sifters.

In the drawings:-Figure 1 is a side view of an ash sifter embodying myinvention, parts being broken away to show the interior construction.Fig. 2 is a vertical longitudinal sectional view. Fig. 3 is a front endview. Fig. 4 is a rear end View. Fig. 5 isa vertical transversesectional view, taken on the line ww, Fig. 2, and. looking toward thefront end. Fig. 6 is a verticaltransverse sectional view, taken on theline y-y, Fig. 2,

and looking toward the. rear end. Fig; 7 is a perspective view of thescreen, detached. Fig. 8 is a perspective view illustrating one of thepairs of legs. Figs. 9, 10, and 11 are detail views.

Corresponding parts in all the 'figures are denoted bythe same lettersof reference.

Referring to the drawings, A designates the casing or shell, which ismounted in inclined position upon suitable legs, B B. The casingispreferably cylindrical-in shape and constructed of sheet metal, but itis obvious that it may be of any suitable or adapted shape, and thatitmay be constructed of any suitable material. The casing is provided witha closed upper end, A, and with an open lower end, A the latter formingthe discharge end of the device. I

The respective pairs of legs B are preferably formed of a single stripof metal bent into shape and comprising a central cylindrical portion,6, adapted to embrace the casing, from which central portion extenddivergent legs, I), a transverse nutted rod or bolt, B, being passedthrough the legs at a point below the central portion 1) tobind andsecure the leg device B in position.

0 designates the rotary screen, which is of less diameter than thecasing and is suitably mounted therein longitudinally. ,Upon the outersurface of the screen is provided a longitudinally-extending spiral wormor flu, D, which embraces the screen and occupies the space between thescreen and the wall of the casing. The screen is provided with in-.teriorly-arranged webs or spokes, C O, to which is connected alongitudinal shaft, E, having bearings in the casing, by which shaft thescreen is rotated. The bearing for the lower end, 6, of the shaft ispreferably provided in a cross piece, F, extending across the lower endof the casing and having angle ends, f f, secured to the sides of thecasing. The upper end of the shaft projects forwardly from the casing,as at e, andis provided with a crank or handle, E, by which the shaftmay be operated. It will be understood that the screen may be ofsuitable or adapted length with relation to the casing, but it ispreferably somewhat shorter than the casing.

G designates a hopper, which is provided with a neck, 9, at an angle toits main or body portion, which neck or extension passes through anopening in the upper end of the casing and enters and, approximatelycorresponds to, the upper or receiving end of the screen.

Near the lower end of the casing an opening, h, is provided in itsbottom, from which extends a conducting pipe, H, adapted to convey anddeposit the ashes in a suitable pail or receptacle, I. A similar pail orreceptacle, J, may be provided at the lower end of the casing to receivethe coal from the screen.

An opening, it, is provided in the top of the casing at its upper end,frornwhich opening projects a pipe, K, to which may be connected a draftpipe, L, extending to a chimney, M,

r'fasteniug the spokes to the shaft.

by which construction the dust arising from the operation of the sifteris effectually carried off. The .dust fine is attached at the highestpoint of the cylindrical shell or casing A, the latter being in inclinedposition and having the closed upper end and open lower end,by whichrelative construction and arrangement the complete withdrawal of thedust is effected.

A worm or similar device, M, may be provided upon the portion of theshaft E which passes through the throat of the hopper, to feed or. forcethe ashes into the screen. It will be noted that the bearing for theupper end e of the shaft E is formed in the wall of the hopper, as shownat F, the relative arrangement and construction being such that theupper end of the shaft extends through the throat of the hopper andprojects from or beyond the latter.

I prefer to employ spokes G C of the construction herein illustrated,said spokes being headed at both ends and passing through the shaft atright angles to each other, by which arrangement the shaft is retainedin central position with relation to the screen without At the outerends of the spokes are provided two cylindrical bands,c c, secured uponthe headed spokes and arranged to embrace the Web of the screen, asshown, by which the parts are securely bound and retained in position.

The operation and advantages of my invention will be readily understood.When ashes are placed in the hopper and the screen revolved, the asheswill pass through the screen to the shell or casing and be carried bythe worm to the opening h, while the coal and cinders will beeffectively screened as they pass through the rotary screen by gravity,and will pass off from the open end of the screen.

a My improved ash sifter is especially designed for convenient andeffective use in cellars Where there are furnaces, by reason of itsanti-dust construction, but it can of course be as well employed for outdoor use, in which screen or casing may be used.

latter case the dust pipe may be dispensed with. It is also obvious thatmy improved sifter is adapted for convenient and efficient use insifting sand, grain, seed, or other substances or materials.

Under some circumstances, I may employ a worm or fin inside the screen,surrounding the shaft, to prevent the coal from running too fast, underwhich circumstances a shorter This inside worm or fin is shown in dottedlines at N, Fig. 2.

By manifest variation in the detail construction and arrangement, it isobvious that in lieu of the casing A, my improved screen may be adaptedfor use in connection with a barrel or box or similar device.

Having thus described my invention, I

claim and desire to secure by Letters Pat cut-- 1. An improved ashsitter, comprising the inclined shell or casing having the open lowerend and the opening h, legs or supports 13 B, the inclined rotary screenmounted in the casing and provided with the worm D and the longitudinalshaft E having the projecting operating end 6, and the hopper Gprovidedwith the neck or extension 9 entering the upper end of thescreen, substantially as r set forth.

2. An improved ash sifter, comprising the inclined casing or shellhaving the open lower end and the'closed upper end and provided with theopening It, the inclined rotary screen mounted in the casing andprovided with the spiral worm D and the longitudinal operating shaft,the hopper entering the front end of the casing and the upper end of therotary screen, and the dust pipe L connected with the opening andextending to a chimney orother suitable point, substantially as setforth.

3. The herein described ash sifter, consisting of the inclined casing orshell A having the open lower end and the closed upper end and providedwith the cross piece F and the openings h and it, from whichrespectively extend the pipes H and K; the leg pieces B B formed in asingle piece comprising the central portion b and the divergent legs I)b and provided with the securing rod or bolt B; the inclined rotaryscreen 0 mounted in the easing and provided with the spiral worm D andthe longitudinal shaft E having the projecting ends e and e the hopper Ghaving the neck or extension g entering the front end of the casing andthe upper end of the screen, substantially as set forth.

4. In an ash sifter of the class described, comprising the inclinedcasing or shell having an open lower end and a closed upper end, and aninclined rotary screen mounted in the casing,a dust pipe L extendingfrom the top of the upper closed end of the inclined casing to a chimneyor other suitable point, substantially as set forth.

5. The combination, with the casing or shell, of the leg pieces B Bformed in one. piece and comprising a central portion 7) correspondingto and embracing the casing, divergent legs I) b, and a transverse rodor bolt passing through the divergent legs at a point below the centralportion, substantially as and for thepurpose set forth.

6. In an ash sifter, comprising the inclined casing or shell having anopen lower end and closed upper end, the inclined rotary screen mountedin the casing and provided with a longitudinal operating shaft, and thehopper having a neck or extension entering the closed front end of thecasing and the upper end of the screen,-the dust pipe L extending fromthe top of the upper closed end of the inclined casing to a chimney orother suitable point, substantially as set forth.

' 7. An ash sifter having an inclined casing or shell provided with anopen lower end, an inclined rotary screen mounted in longitudinalposition within the casing and of less diameter than the latter andprovided with an exteriorly-arranged spiral worm or fin occu- 'pying thespace between the screen and the re casing, and a hopper entering theupper end of the screen, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FILLMORE A. PEARSONS. Witnesses:

I E. V. Ross,

t J. M. BUSHEY.

